\ Ubisoft Assassin’ s Creed\ Revelations\ ACR. Reinstall UbiSoft Game Launcher. In this tutrial i am going to show you how to fix Failed to start the Ubisoft Game Launcher error in Assassins Creed Revelation. I have download AC from the Steam shop. Every time I load ACR, the stupid Ubisoft Game launcher pops out, say " Checking for Udates" And then a moment later,. I tried to reinstall the launcher, delete the folder of launcher, download the game from Steam numbers of time, but the error still persist. Assassin' s Creed · Assassin' s Creed - General Discussions; [ Steam] ACR - Ubisoft Game Launcher Error - " Fail to start. Please do not skip this step, it is very important. · Erro no ubisoft game launcher no windows 7 - Tópico sobre o game Assassin' s Creed II. Error Ubisoft game Launcher, Reinstala assassin' s creed 2,.